189 results about "Grindstone" patented technology

To provide an eccentric pin measuring device measuring circularity while supporting a workpiece sandwiched between a spindle center and a tailstock center.SOLUTION: A workpiece w having an eccentric pin w1 is ground by a grindstone 9 of a grinder. On a grindstone table 7, an eccentric pin measuring device supporting a measuring head 15 so as to be movable in a vertical y-axis direction orthogonal to an x-axis is mounted. A position control part rotates a main spindle, maintains a distance in an x-axis direction from a pin center in an initial state where the measuring head 15 is brought into contact with the eccentric pin w1, controls a position in a y-axis direction so that the measuring head 15 exists at a position in a y-axis direction the same as the pin center, and determines positioning data in the x-axis direction, positioning data in the y-axis direction, a measured value from the measuring head 15, and a rotation phase angle during rotation of the workpiece w while rotating the workpiece w over one circumference of the eccentric pin w1 and creates measurement shape data.SELECTED DRAWING: Figure 1

To provide a grinding method of a workpiece capable of suppressing reduction in processing efficiency by replacement of a grinding wheel.SOLUTION: Provided is a grinding method of a workpiece of grinding a circular region to be ground set in the workpiece by a grinding wheel including a grindstone to form a circular recess in the workpiece. The grinding method includes: a holding step of holding the workpiece in a holding surface of a chuck table; a first grinding step of grinding an outer peripheral part of the region to be ground by the grindstone; a separation step of separating the workpiece and the grindstone; and a second grinding step of grinding a center part of the region to be ground by the grindstone.SELECTED DRAWING: Figure 3

The present invention relates to the technical field of corn stalk crushing, and specifically to a corn harvester stalk crushing device based on mechanical interlocking action, comprising a shell; the shell is a cylindrical structure, a plurality of blades are evenly arranged around the axis of the shell in the shell, the blades rotate around the axis of the shell in the shell, the blades have a crushing mode and a grinding mode, when the blades are in the switching mode, the blades rotate around their own extension direction, when the blades are in the crushing mode, the blade end face is parallel to the horizontal plane, when the blades are in the grinding mode, there is an angle between the blade end face and the horizontal plane, a sharpening unit is arranged in the shell, the sharpening unit comprises a lifting frame arranged in the shell in a vertical direction, two grindstones are arranged vertically on the lifting frame, and the grindstones are arranged along the radial direction of the shell. The present invention enables the blades to cut the stalks for a long time, and the cutting efficiency is always constant.

In the present invention, a recessed grinding part 5b of an outer peripheral portion of a grindstone 5 has arc-shaped parts 5e at both ends in the thickness direction and a linear part 5h between the arc-shaped parts. A workpiece 2 and the grindstone 5 are arranged in parallel, and the grindstone 5 is moved relative to the workpiece 2 under a moving condition calculated on the basis of the radius of curvature of the arc-shaped parts 5e so that a contact portion between the recessed grinding part 5b and the workpiece 2 moves along a desired cross-sectional shape of the workpiece 2 while the workpiece and the grindstone are rotated. The radius of curvature of the arc-shaped parts 5e is 10 times or more of the thickness of the workpiece 2 so that the arc-shaped parts 5e of the grindstone 5 abut on the workpiece 2 without creating a gap between the arc-shaped parts and a chamfered portion 2a of the desired cross-sectional shape. A lower surface of the workpiece 2 is picked up by a pick-up member 10, and the lower arc-shaped part 5e has a length which is equal to or greater than a length of the chamfered portion 2a on the lower side of the workpiece 2 having the desired cross-sectional shape, and which is less than a length to abut on the pick-up member 10 in a state of contact with an end portion of the lower surface of the workpiece 2 at a position where a tangent line extends at the same angle as a tapered shape 10a of the pick-up member 10.

A workpiece machining device capable of machining the peripheral portion of a workpiece into a target shape with high precision, and a method for manufacturing the workpiece machining device are provided. [Solution] The present invention determines a target trajectory of the rotary drive unit 4 relative to the support part 2 when machining the workpiece W based on the target machining dimensions of the workpiece W and the outer diameters of the grinding wheels 3a, 3b stored in a memory device, causes the rotary drive unit 4 to rotate the grinding wheels 3a, 3b while the moving device 5 moves the support part 2 and the rotary drive unit 4 relatively along the target trajectory, machines the peripheral part of the workpiece W with the outer periphery of the grinding wheels 3a, 3b, calculates the measured value of the outer diameter of the grinding wheels 3a, 3b based on the dimensions of the machined workpiece W measured by a measuring unit 6 and the target machining dimensions, and updates the outer diameter of the grinding wheels 3a, 3b stored in the memory device to the calculated measured value of the outer diameter of the grinding wheels 3a, 3b.

To provide a blade sharpening apparatus including a cover portion that can accommodate wear of a grindstone, have durability, and reduce replacement frequency.SOLUTION: A blade sharpening apparatus comprises: a grindstone 31 having a thickness, which is a dimension in a direction along a central axis C1, where an end surface having the central axis C1 as its normal direction is a polishing surface 31b for sharpening a blade, and an outer surface 31d is cylindrical; a mounting base 10 on which the grindstone 31 is mounted; a rotation device 20 that rotates the grindstone 31 about the central axis C1 on the mounting base 10; a water supply unit 60 for supplying water to the grindstone 31; a cover portion 40 that surrounds the outer surface 31d of the grindstone 31 and prevents scattering of water from the grindstone 31; and a height adjustment mechanism 50 that varies the height of the cover portion 40 from the mounting base 10 by moving the cover portion 40 in the direction along the central axis C1.SELECTED DRAWING: Figure 1

To provide a disc grinder cover which can change a direction of a protection cover relative to a disc grinder body.SOLUTION: A disc grinder cover 1 may be attached to a disc grinder 101 including: a tool body 10 which generates rotational power; a rotary shaft which transmits the power of the tool body 10; a pedestal part through which the rotary shaft is inserted and which is disposed at the tool body 10 side; and a disc-like disc 16 attached to the rotary shaft and having a grindstone. The disc grinder cover includes: a protection cover 30 which covers the disc 16 from the pedestal part side and is fixed to the pedestal part; and an angle fixing part which sets an angle position of the protection cover 30 and fixes the protection cover to the pedestal part. The angle fixing part has: a biasing plate 45 which is biased through elastic members in a direction from the protection cover 30 to the pedestal part; and engagement parts which engage with the biasing plate at the set angle position while causing the biasing plate to face the pedestal part.SELECTED DRAWING: Figure 3B

The present invention relates to the technical field of lead powder grinders, and in particular to a lead powder grinder with a cutter grinding function. The present invention provides a lead powder grinder with a cutter grinding function that can grind and frost a cutter. A lead powder grinder with a cutter grinding function comprises a base, a grinding box, a sliding door, a lead powder placement box, a sealed door, a guide rail, and a motor, etc. A grinding box is installed in the middle of the upper rear side of the base, the left and right sides of the grinding box are slidably connected to the sliding door, the front lower part of the grinding box is rotatably connected to the sealed door, a lead powder placement box is placed at the bottom of the grinding box, the front and rear sides of the bottom of the grinding box are connected to the guide rails, and the rear side of the inner wall of the grinding box is slidably connected to the motor. When the blade of the cutter is inserted into the strip groove on the grindstone, the cutter in a rotating state rubs against the grindstone, thereby being able to grind the cutter, which is beneficial to maintaining the grinding effect of the cutter on the lead powder.

The utility model relates to a knife sharpening auxiliary structure and a knife sharpening device, and belongs to the technical field of knife sharpeners. The cutter placing table comprises a base and limiting assemblies arranged on the base left and right, the limiting assemblies are symmetrically located on the two sides of the base, each limiting assembly comprises a first limiting plate and a second limiting plate, and a limiting gap used for limiting a cutting edge is formed between the first limiting plate and the second limiting plate which are parallel to each other; the first limiting plate and the second limiting plate incline downwards towards the center point of the base. The utility model provides a knife sharpening auxiliary structure and a knife sharpening device, which ensure that the grinding angle is accurate and consistent through an inclined limiting plate and improve the grinding quality. The two faces of the knife stone assembly are different in roughness, coarse grinding and accurate grinding can be rapidly switched, and the grinding efficiency is improved. And the cutter placing table and the fixing seat are quickly disassembled and assembled, and the universality is high. The overturning assembly is ingenious in design, it is guaranteed that the knife stone is overturned flexibly and stably, user experience is optimized, the cutting edge is evenly ground through the two-way sliding design, and the knife connecting trace is eliminated.

The utility model discloses a paint bucket cover cutting machine with a cleaning mechanism, and relates to the technical field of paint bucket processing, the paint bucket cover cutting machine comprises a rack, the upper end of the rack is fixedly provided with supports in sequence, and the middle parts of the supports are fixedly provided with fixing seats in sequence. According to the cutting device, after the cutting operation is completed, the rotating rod is rotated to drive the upper cutter shaft to move upwards along the sliding rod until the cutting knife abuts against the two knife grinders, at the moment, the driven gear at the other end of the upper cutter shaft can be meshed with the driving gear, the first motor is started, the driving gear drives the driven gear to rotate, and the cutting knife at the end is made to rotate; when the cutter is rotated, friction is generated between the cutter and the two sharpening stones, so that cleaning of the cutter becomes simple, oil stains and metal chips on the surface of the cutter can be cleaned up in the process, the cutting performance of the cutter is guaranteed, the sharpening stones are abraded after the cutter is used for a period of time, a limiting plate used for fixing a protruding block can be pulled out, and the cutter can be fixed. And therefore, the knife stone can be conveniently replaced, and the cleaning effect on the cutting knife is guaranteed.

To provide an edge line generation device that can easily obtain an edge line useful for creation of a grinding trajectory on the basis of edge detection data of an image.SOLUTION: An edge line generation device 12 comprises: an X-axis operation unit 20 and a Y-axis operation unit 22 which operate movement of a grindstone; and a manual specification part including a button which specifies a plurality of points of a contour or a vicinity of a work-piece image displayed on a display 14 as specification points. The edge line generation device comprises an edge line generation part 27 which generates an edge line displayed on the display 14 on the basis of edge detection data existing between display positions of the plurality of specified specification points.SELECTED DRAWING: Figure 1

To form a preferable holding surface on a chuck table by performing self-grinding.SOLUTION: A holding surface formation method of grinding an upper surface of a chuck table by a grindstone to form a holding surface includes: a grinding step of grinding the upper surface of the chuck table by the grindstone to form the holding surface; and a high-pressure water supply step of supplying high pressure water to the holding surface, after the grinding step. In the grinding step, a brittle layer exposed to the holding surface is formed in the chuck table. In the high-pressure water supply step, the brittle layer is removed by the high pressure water. Preferably, in the high pressure water supply step, the high pressure water is supplied to the entire region of the holding surface.SELECTED DRAWING: Figure 7

The utility model relates to the technical field of grinding wheel dressing, and discloses a dressing device which is used for dressing a grinding wheel and comprises a workbench, a grinding stone, a pressurizing piece and a lifting mechanism. The grinding stone is connected to the workbench and used for bearing the grinding wheel. The pressurizing piece is positioned above the millstone; the lifting mechanism is connected to the pressurizing piece and can drive the pressurizing piece to be close to the grinding stone so that the pressurizing piece can abut against the grinding wheel. According to the dressing device, the pressure applied to the grinding wheel by the pressurizing piece each time can be kept consistent through the lifting mechanism, accurate control over the grinding amount of the grinding wheel by the grinding stone is achieved, the defect that in the prior art, the grinding amount is uneven due to manual operation differences is overcome, the unified standard is provided for grinding wheel dressing, and the dressing efficiency is improved. The stability of the grinding wheel dressing effect is improved, the grinding efficiency is improved, and the consistency of the grinding quality of the grinding wheel is ensured.

One array of grindstones is used for in-feed grinding and creep-feed grinding. Therefore, it is not necessary to position a chuck table that is holding a plate-shaped workpiece with respect to two different arrays of grindstones. As a result, a period of time required to grind the plate-shaped workpiece can be shortened. Furthermore, lower surfaces of the grindstones are used for the in-feed grinding, whereas side surfaces of the grindstones are used for the creep-feed grinding. Consequently, the amount by which the grindstones are worn can be smaller than that in a case where the plate-shaped workpiece is ground to a predetermined thickness in only the in-feed grinding or the creep-feed grinding.

The present invention addresses the problem of providing a novel grinding device that causes little damage to a workpiece and can perform machining with high efficiency. The processing device is provided with: a grindstone in which abrasive grains are dispersed in a binder containing a thermoplastic resin; and a temperature adjusting mechanism for adjusting the temperature of the contact surface between the grinding tool and the object to be processed according to the processing mode.

The grindstone (10) with the shaft comprises a grindstone seat (11), a grindstone shaft (12) and a grindstone (13), one end of the grindstone shaft (12) is supported by the grindstone seat (11), and the grindstone (13) is installed on the grindstone shaft (12). Guide shapes (15a, 17, 18, 18a) are provided on the grindstone seat (11), and the grindstone seat (11) is provided so that the flow direction of the grinding fluid discharged toward the outer peripheral surface of the grindstone seat (11) is changed while the grinding fluid is supplied to the grinding site of the workpiece (1).

To provide a dressing device for a grindstone, a dressing method for a grindstone, and a control program that can obtain more uniform sharpness over the entire grindstone surface.SOLUTION: A dressing device includes: a grindstone holding unit 30 capable of rotating a grindstone 12; a dresser holding unit 40 capable of holding a dresser 36 for dressing the grindstone 12; a moving mechanism unit 70 that moves at least one of the grindstone holding unit 30 and the dresser holding unit 40 so that the dresser 36 and the grindstone 12 are scanned relative to each other; and a control device 51 that controls the moving mechanism unit 70 so that when the dresser 36 contacts a large-diameter portion 210 of the grindstone surface 21, the dresser 36 and the grindstone 12 are scanned relative to each other at a first speed, and when the dresser 36 contacts a small-diameter portion 220 of the grindstone surface 21, the dresser 36 and the grindstone 12 are scanned relative to each other at a second speed higher than the first speed.SELECTED DRAWING: Figure 1

The application provides a knife sharpener with adjustable angle between two grinding stones, comprising a mounting base and a cover, the mounting base is provided with a linkage assembly and a grinding assembly, the grinding assembly comprises a fixed shaft, two grinding blocks and two grinding stones, the two grinding blocks are arranged in cross, the fixed shaft penetrates the middle part of each grinding block, the grinding stone is arranged at the first end of the grinding block, the linkage assembly is connected with the second end of the grinding block, the linkage assembly drives the two grinding blocks to rotate in opposite directions around the fixed shaft, and the linkage assembly comprises a knob; the cover is arranged on the mounting base, the cover is provided with a grinding opening and a sliding groove, the grinding stones are arranged in the grinding opening in cross, the knob is arranged in the sliding groove through the cover, and the knob can move to the grinding opening direction. The front and back movement of the knob drives the two grinding blocks to rotate in opposite directions around the fixed shaft, which is convenient for adjusting the angle between the two grinding stones, so as to adapt to various blade angle cutters, improve the grinding efficiency and prevent the wear of the blade.

This invention discloses a novel knife sharpener, specifically comprising: a sharpening box, wherein a first pad assembly and a second pad assembly are disposed on the inner wall of the bottom of the sharpening box; a first sharpening stone, placed on the first pad assembly; a second sharpening stone, placed on the second pad assembly; and a first positioning assembly disposed on the side of the first sharpening stone away from the second sharpening stone. Because the bottom surface of the first sharpening stone is inclined, when a knife is inserted into the sharpening channel, if the thickness of the knife is greater than the width of the current sharpening channel, the first sharpening stone will inevitably be squeezed towards the side closer to the first positioning assembly. At this time, the gap width decreases, and the width of the sharpening channel increases, allowing it to adapt to the size of the knife. Simultaneously, because the bottom surface of the first sharpening stone is inclined, there is a gravitational force between the first sharpening stone and the knife, thereby ensuring the sharpening effect and improving sharpening efficiency.

The utility model relates to the technical field of paperboard transverse cutting devices, and discloses a corrugated paperboard transverse cutting device which comprises a workbench, a portal frame is fixed to the workbench, a paperboard transverse cutting knife is arranged in the portal frame, a hydraulic cylinder is connected to the upper portion of the portal frame in a penetrating mode, and the extending end of the hydraulic cylinder is connected with the paperboard transverse cutting knife. Fixing frames are fixed to the two sides of the inner side of the portal frame, guide rods are movably inserted into the front portions and the rear portions of the interiors of the fixing frames, adjusting plates are fixed to the ends, opposite to the paperboard transverse cutters, of the guide rods, threaded rods are in threaded connection with the middles of the fixing frames, and the threaded rods are rotationally connected with the adjusting plates. A knife stone seat is mounted on the side face, opposite to the paperboard transverse cutter, of the adjusting plate through a connector, and a knife stone is fixed to the side face, away from the connector, of the knife stone seat, so that the paperboard transverse cutter can be better ground through the knife stone, the paperboard transverse cutter is sharper when used, and a paperboard can be better cut.

[Problem] To provide a cutting grindstone mounting structure which is capable of stably supplying a cooling liquid to a cutting grindstone, and is capable of detachably and properly mounting the cutting grindstone on a drive shaft.　[Solution] A cutting grindstone 20 mounting structure, which is capable of supplying a cooling liquid, is provided with: a drive shaft 11 that is composed of a rotation stop shaft part 11a and a male screw-like shaft part 11b; an inner flange 61 that is engaged with the rotation stop shaft part 11a and receives the cutting grindstone 20; a lock nut 62 that is screwed to the male screw-like shaft part and holds and fixes the cutting grindstone; cooling liquid introduction mechanisms 84, 86 that are configured in the drive shaft 11 and / or the lock nut 62 and guide the supplied cooling liquid to the inflow port 35a; and a supply joint part 63 that comprises a connection male screw member 92 which is connected to the cooling liquid introduction mechanisms 84, 86 through a flow passage and a joint body 91 which is connected to a cooling liquid supply source through the flow passage.

A machine tool (100) comprises: a grinding unit (4) that is provided with a tool spindle (1), a tool exchange mechanism (81) for attaching / detaching a tool to / from the tool spindle (1), a grindstone (42), and a drive mechanism (44) for transmitting the rotation of the tool spindle (1) to the grindstone (42) and converting the rotation direction or the rotation speed thereof; a stocker (5) that accommodates the grinding unit (4); a tool magazine that accommodates a tool different from the grindstone (42), the tool magazine being disposed outside a processing chamber (900); and an opening / closing door (D) that is provided on the front surface of the processing chamber (900). The tool exchange mechanism (81) partitions the tool magazine (910) and the processing chamber (900), and includes an opening / closing shutter (31) that opens and closes in order to deliver a tool between the tool spindle (1) and the tool magazine (910). The stocker (5) is disposed on the same side as the opening / closing shutter (31) in the lateral direction as viewed from the opening / closing door (D) within the processing chamber (900) in which the tool spindle (1) is disposed.

A method of manufacturing a grinding wheel includes a surface unevenness forming step of applying ultrasonic vibrations from an ultrasonic vibration applying unit through water to an annular slot defined in a surface of an annular base along circumferential directions thereof, thereby forming surface unevennesses on either one or both of a side surface and a bottom surface of the annular slot, and, after the surface unevenness forming step, a grindstone fixing step of fixing a plurality of grindstones to the annular slot with an adhesive.

A processing method includes: holding a workpiece on a holding surface of a holding table; processing the workpiece by a grindstone tool; and dressing the grindstone tool by bringing a dressing member into contact with the grindstone tool while feeding the dressing member in a stretching direction, the dressing member containing abrasive grains and linearly stretching.

To provide a grinding method of a semiconductor crystal capable of achieving higher grinding accuracy by managing plastic deformation more precisely and in detail as a plastic deformation mechanism of an end face of a semiconductor crystal ingot or a wafer surface, and a grinding wheel for grinding used in the grinding method.SOLUTION: In the method for grinding the Si wafer 100, a plastically deformed area 100A is formed on the front face of the wafer 100 by a temperature rise caused by friction with the grindstone 53 from the grindstone 53 and a pressing force for pressing the wafer 100 against the grindstone 53 via the spindle 51, and the plastically deformed area 100A is ground by the grindstone 53 while performing functional polishing by including a functional additive in the grindstone 53 on the front face of the plastically deformed area 100A.SELECTED DRAWING: Figure 4

The utility model relates to the technical field of terrazzo floors, in particular to a terrazzo floor with a pressure relief function, which comprises a leveling layer positioned above a base layer, a terrazzo layer positioned above the leveling layer and a pressure relief pipe positioned below the terrazzo layer, the pressure relief pipe is provided with a channel, or a channel can be formed between the pressure relief pipe and the leveling layer, or a channel can be formed between the pressure relief pipe and the millstone layer; leaking holes communicated with the channel are formed in the peripheral side of the pressure relief pipe, and at least part of the leaking holes abut against the leveling layer. According to the device, the pressure relief pipe with the channel and the leakage holes is arranged below the compact millstone layer, water vapor of the leveling layer can enter the channel through the leakage holes, a buffer space is reserved for the water vapor, and the water vapor is prevented from bursting the millstone layer.

The utility model relates to the technical field of agricultural mechanical equipment, in particular to a knife grinding device for a chopping knife of a chopping and rubbing machine, and aims to solve the problems that in the existing blade grinding process of the chopping and rubbing machine, a manual grinding mode is generally adopted, and the grinding efficiency is high. The grinding amount of the blade is difficult to control; the dynamic balance of the rotating blade is extremely easy to damage; and finally, the overall service life of the filament rubbing machine is influenced. The device is mainly composed of a mounting plate, a knife stone, a driving chain wheel, a driven chain wheel, a guide rail, a sensor and the like, a knife stone mounting assembly is integrally arranged on the guide rail in a sliding mode and is driven by a driving motor to reciprocate, and a position sensor and a counting sensor are used for detecting the moving position of the knife stone and counting the reciprocating knife sharpening frequency. The knife grinder can efficiently, stably and periodically grind a hob and a disc cutter of the rubbing machine according to the presetting of the controller, so that the sharpness of a blade is effectively ensured, and the overall chopping production efficiency of the rubbing machine is improved.

The utility model relates to the technical field of cutting equipment, and discloses a cutting machine with a knife sharpening function, which comprises cutting machine equipment, the top end of the cutting machine equipment is fixedly connected with two adjusting brackets, the adjusting brackets are internally provided with through grooves, the through grooves are internally connected with movable brackets in a sliding manner, and the movable brackets are fixedly connected with the cutting machine equipment. A support plate is fixedly connected to one side of the movable support, and a grinding device is installed at the bottom end of the support plate. According to the cutting machine with the knife sharpening function, when knife sharpening is needed, only the support needs to be lowered through simple operation, the knife sharpening stone can rapidly fall to make contact with a cutter of the cutting machine for grinding, complex adjusting and aligning processes are not needed, the operation time is greatly saved, the working efficiency is improved, when knife sharpening is not needed, the knife sharpening stone is lifted, the working area is wider, and the working efficiency is improved. Other operations such as cutting are facilitated, occupation and interference of the knife stone on a working space are avoided, and obstacles in a working area are reduced.

A method of manufacturing a grindstone includes molding a mixture of materials including abrasive grains, an epoxy resin, and an amine-based hardener to a predetermined shape and leaving the mixture to stand until the epoxy resin is hardened by the amine-based hardener in a chemical reaction therewith, and the amine-based hardener has an amine value of 600 mgKOH / g or higher.

The present application relates to a kind of grinder guide rail seat calibration device and calibration method, for the calibration of the grinder guide rail seat of shredding assembly;Grinder guide rail seat calibration device includes positioning seat and measuring rod, positioning seat is installed on the grinder stone assembly mechanism of shredding assembly, measuring rod can be inserted and removed on positioning seat;Two ends of grinder guide rail seat are respectively detachably installed on the shell welding of shredding assembly;Grinder stone assembly mechanism side is slidably connected on the guide rail column arranged horizontally in shell welding, and can move along guide rail column axial motion and circumferential motion;The other side of grinder stone assembly mechanism can move along grinder guide rail seat;Shell welding is also provided with first abutment limiting portion and second abutment limiting portion at the same height;Measuring rod is arranged perpendicular to guide rail column, one end of measuring rod extends outside the upper end of shell welding, the other end of measuring rod extends into shell welding and is used for with first abutment limiting portion or second abutment limiting portion adaptation abutment.